604126421 has 2 divisors, whose sum is σ = 604126422. Its totient is φ = 604126420.

The previous prime is 604126409. The next prime is 604126447. The reversal of 604126421 is 124621406.

It is an a-pointer prime, because the next prime (604126447) can be obtained adding 604126421 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 334707025 + 269419396 = 18295^2 + 16414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-604126421 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (604126321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302063210 + 302063211.

It is an arithmetic number, because the mean of its divisors is an integer number (302063211).

Almost surely, 2^604126421 is an apocalyptic number.

It is an amenable number.

604126421 is a deficient number, since it is larger than the sum of its proper divisors (1).

604126421 is an equidigital number, since it uses as much as digits as its factorization.

604126421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 604126421 is about 24578.9833190879. The cubic root of 604126421 is about 845.3617819899.

Adding to 604126421 its reverse (124621406), we get a palindrome (728747827).

The spelling of 604126421 in words is "six hundred four million, one hundred twenty-six thousand, four hundred twenty-one".